Now that Cosmos is back on the air, why not wear one of Carl Sagan's most beloved expressions? "The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars," he famously said. "We are made of starstuff." Jen at Exaltation used the quote as inspiration for this gorgeous necklace, and she's offering a special sale for MindHut readers—enter the coupon code MINDHUT10 for 10% off (sale starts March 16).